Thermochromic dry offset ink, and printed article produced using the same
AssigneeThe Pilot Ink Co., Ltd.
InventorsKuniyuki Senga, Masahiro Ito
Life of this patent
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Abstract
A thermochromic dry offset ink comprising a dry offset ink medium and a thermochromic pigment material dispersed therein, wherein the thermochromic pigment material is a pigment material which has a microcapsular form having non-round particle cross section and has a thermochromic material enclosed in the microcapsules. Also disclosed is a printed article produced using the ink. The thermochromic dry offset ink can more improve pressure resistance and heat resistance and also can more satisfy uniform printability and high-speed continuous printability in offset printing especially on articles such as containers.
Claims17
A thermochromic dry offset ink, comprising a dry offset ink medium and a thermochromic pigment material dispersed therein, wherein the thermochromic pigment material is a pigment material which has a microcapsular form having non-round particle cross section and has a thermochromic material enclosed in the microcapsules, and wherein said thermochromic pigment material has a hollow at some part of its outer surface.
A thermochromic dry offset ink, comprising a dry offset ink medium and a thermochromic pigment material dispersed therein, wherein the thermochromic pigment material is a pigment material which has a microcapsular form having non-round particle cross section and has a thermochromic material enclosed in the microcapsules, and which contains at least one fine powder having the function of a spacer, said-fine powder being selected from the group consisting of a fine thermosetting-resin powder, a fine thermoplastic-resin powder and a fine inorganic-material powder, the fine powder having a particle diameter larger than the average particle diameter of said thermochromic pigment material and being contained in an amount ranging from 5% by weight to 20% by weight.
A printed article provided with a thermochromic print layer formed by offset printing, utilizing a thermochromic dry offset ink comprising a dry offset ink medium and a thermochromic pigment material dispersed therein, wherein the thermochromic pigment material is a pigment material which has a microcapsular form having non-round particle cross section and has a thermochromic material enclosed in the microcapsules, and wherein said thermochromic pigment material has a hollow at some part of its outer surface.
A printed article provided with a thermochromic print layer formed by offset printing, utilizing a thermochromic dry offset ink comprising a dry offset ink medium and a thermochromic pigment material dispersed therein, wherein the thermochromic pigment material is a pigment material which has a microcapsular form having non-round particle cross section and has a thermochromic material enclosed in the microcapsules, and which contains at least one fine powder having the function of a spacer, said-fine powder being selected from the group consisting of a fine thermosetting-resin powder, a fine thermoplastic-resin powder and a fine inorganic-material powder, the fine powder having a particle diameter larger than the average particle diameter of said thermochromic pigment material and being contained in an amount ranging from 5% by weight to 20% by weight.
Dependencies are inferred from the claim text.